covertly
US /koʊˈvɝːt.li/
UK /ˈkəʊ.vɜːt.li/
副詞
秘密地, 暗中地
without being openly acknowledged or displayed; secretly or surreptitiously
範例:
•
They worked covertly to gather intelligence.
他們秘密地工作以收集情報。
•
The company covertly monitored its employees' emails.
該公司秘密地監控員工的電子郵件。